TM-9-2320-272-10

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; OPERATOR'S MANUAL

SEPTEMBER 2004

CHANGE 2

TM-9-2320-272-10 - Page 340 of 481

a.

General.

The hardtop kit and the radiator and hood cover kit are installed

by direct support maintenance on vehicles operating in -25°F (-32°C) temperatures

or below.

b.

Operating with Engine

Compartment Covers Installed.

(1)

Start engine with radiator

cover flap (6) closed. Refer to paragraph

2-13 for cold weather starting instruc-

tions.

(2)

Roll up and secure radiator

cover flap (6) in open position when

engine temperature rises above 175°F

(79°C) as indicated by engine coolant

temperature gauge (7) on instrument

panel (8).

(3)

If engine coolant temperature should exceed 200°F (93°C), completely

remove engine compartment cover (5) to avoid overheating.

(4)

Open and close cover flap (6) as required during arctic operations to

maintain engine coolant temperature within normal operating range of 175°-200°F

(79°-93°C).

2-43. HARDTOP KIT AND RADIATOR AND

HOOD COVER KIT

TM 9-2320-272-10

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